<!DOCTYPE html>
<html>
<head>
    <title>login</title>
</head>
<body>
    <form action="/login" method="post">
    用户名：<input type="text" name="username">
    <br>
    密码： <input type="password" name="password">
    <br>
    <input type="submit">
    </form>


</body>
</html>